Deception jamming against stepped-frequency ISAR using image synthesis technology

Based on the principle of stepped-frequency inverse synthetic aperture radar (stepped-frequency ISAR), a method of producing false targets for countering stepped-frequency ISAR is proposed. Also, the image synthesis method proposed has an advantage that false target motion states including position, velocity, and direction can be controlled or adjusted. The principle, system architecture and theory foundation of the image synthesizer against stepped frequency ISAR are described in detail in this paper. Furthermore, how false-target signals are synthesized is given in theory, and the image processing to reconstruct the false target is presented. Lastly, the simulations have been done, and the deceiving jamming against stepped-frequency ISAR is accomplished. The simulation results show that the target-false signal is synthesized successfully and the false target can be visually displayed on ISAR 2D imaging screen, thereby the effectiveness and feasibility of the method are demonstrated.